Struct ScanRequest 

pub struct ScanRequest {
    pub req_id: u64,
    pub fragment: u32,
    pub matcher_kind: u32,
    pub matcher_arg: Vec<u8>,
    pub transform_kind: u32,
    pub transform_arg: u32,
    pub limit: u32,
    pub offset: u64,
    pub priority: i32,
    pub hops: u32,
}

Distributed scan: coordinator -> fragment holder. Mirrors ForwardedGet: one holder per fragment, failover across replica_order, hop-bounded re-forwarding during placement migration. The spec is data, never code.

Fields

req_id: u64

fragment: u32

matcher_kind: u32

Matcher descriptor: 0=all, 1=key prefix.

matcher_arg: Vec<u8>

Matcher argument: prefix bytes when matcher_kind=1.

transform_kind: u32

Transform descriptor: 0=identity, 1=key_only, 2=prefix_bytes.

transform_arg: u32

Transform argument: N when transform_kind=2.

limit: u32

Per-fragment match bound. 0 = server default. This bound is also the wire-size safety: the response is a single envelope, so limit * avg value size must stay comfortably under the 16 MiB frame cap.

offset: u64

Skip-first-N pagination cursor (deterministic key order).

priority: i32

Always PRIORITY_BACKGROUND for scans.

hops: u32

Re-forward bound, as with ForwardedGet.

Implementations

impl ScanRequest

pub fn priority(&self) -> Priority

Returns the enum value of priority, or the default if the field is set to an invalid enum value.

pub fn set_priority(&mut self, value: Priority)

Sets priority to the provided enum value.

Trait Implementations

impl Clone for ScanRequest

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ScanRequest

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for ScanRequest

fn default() -> Self

Returns the “default value” for a type.

impl Eq for ScanRequest

impl Hash for ScanRequest

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Message for ScanRequest

fn encoded_len(&self) -> usize

Returns the encoded length of the message without a length delimiter.

fn clear(&mut self)

Clears the message, resetting all fields to their default.

fn encode(&self, buf: &mut impl BufMut) -> Result<(), EncodeError>

where Self: Sized,

Encodes the message to a buffer.

fn encode_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message to a newly allocated buffer.

fn encode_length_delimited( &self, buf: &mut impl BufMut, ) -> Result<(), EncodeError>

where Self: Sized,

Encodes the message with a length-delimiter to a buffer.

fn encode_length_delimited_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message with a length-delimiter to a newly allocated buffer.

fn decode(buf: impl Buf) -> Result<Self, DecodeError>

where Self: Default,

Decodes an instance of the message from a buffer.

fn decode_length_delimited(buf: impl Buf) -> Result<Self, DecodeError>

where Self: Default,

Decodes a length-delimited instance of the message from the buffer.

fn merge(&mut self, buf: impl Buf) -> Result<(), DecodeError>

where Self: Sized,

Decodes an instance of the message from a buffer, and merges it into self.

fn merge_length_delimited(&mut self, buf: impl Buf) -> Result<(), DecodeError>

where Self: Sized,

Decodes a length-delimited instance of the message from buffer, and merges it into self.

impl PartialEq for ScanRequest

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for ScanRequest